Charge diluting attachment for engine intake manifolds



Nov. 1, 1938. c, mA 2,134,767

CHARGE DILUTING ATTACHMENT FOR ENGINE INTAKE MANIFOLDS Original Filed July 22, 1952 ttornegs Patented Nov. 1, 1938 UNITED STATES CHARGE DILUTING ATTACHMENT FOR EN- GINE INTAKE MANIFOLDS Charles Strancke, Milwaukee, Wis.

Original application July 22, 1932, Serial No.

Divided and thisapplication December 16, 1936, Serial No. 116,049

Claims.

This invention relates to improvements in charge diluting attachments for engine intake manifolds.

The present application is a division of my 5 application No. 623,957 entitled Charge modifying attachments for engine intake manifolds. In the above entitled parent application I have disclosed a preferred means for regulating the total flow of a gaseous mixture to the manifold together with means for regulating the delivery of such mixture to the manifold in a manner to vary the portions of the mixture supplied to portions of the charge in varying areas of the manifold.

The present application pertains specifically to the charge regulating attachment which is fitted to the manifold. It is the primary object of the invention to provide a manifold inlet fitting incorporating means by which the incoming gas may be apportioned between different parts of the manifold to secure the most desirable results, it being found that the flow of charge through the manifold is by no means uniform and that the incoming gas should be apportioned about the manifold in accordance with the relative flow of the charge therethrough.

In the drawing:

Figure 1 is a diagrammatic view largely in side elevation but partially insection showing the device of the present invention applied to an intake manifold between the carburetor and the manifold proper.

Figure 2 is a plan view of the fitting partially broken away to a horizontal section.

Figure 3 is a fragmentary detail View taken on the line 3-3 of Figure 2.

Like parts are identified by the same reference characters throughout the several views.

It is very important in any air or gas admission system to control the delivery of the diluting gases not only as to amount but also as to the proportionate amount delivered to different parts of the manifold. Different engines vary as to their requirements in this regard even as between engines of the same make equipped with like carburetors.

My improved inlet fitting comprises a block interposed between the intake manifold fiange 36 and the complementary carburetor flange 31. The block 35 is preferably made to register with the aforesaid flanges and is apertured in registry with the holes which receive bolts 38. It has a central bore 39 which passes with a slight restriction at 34 to the intake manifold the charge originating in the carburetor.

Pipe 3| leads the diluting air to an annular distributing conduit 40 which may comprise a groove cut in the upper face of the block 35. From this conduit any desired number of ducts 4| lead tangentially into the mixture passage 39, each duct preferably being under the individual control of its own needle valve 42. To provide a convenient seat for the jamb nuts 43 for these valves the block 35 may be squared up as shown in Figure 2.

As above noted, it will be found that these valves should be adjusted individually according to the requirements of the particular engine. It will be found that best results may be secured with one valve relatively wide open and another relatively tightly closed, depending on factors unknown at the present time, but probably concerned with the manner in which the charge moves from the carburetor through fitting 35 to the intake manifold.

I claim:

1. An intake manifold fitting comprising a block having a central aperture registerable with the manifold opening, a plurality of ducts opening tangentially into the aperture of said block, andneedle valve means in threaded connection with said block and individually controlling the respective ducts, said block including a conduit placing the several ducts in communication with each other and comprising a channel in a face of the block externally of the points in said ducts at which said needle valve means is effective.

2. An intake manifold fitting comprising a block having faces adapted to be clamped between the manifold fianges and having a'central aperture registerable with manifold openings and having a plurality of ducts opening tangentially into said aperture and a channel in one of said faces adapted to be closed by one of said flanges when the fitting is assembled in the manifold, a

supply pipe leading through said block to the channel, and valve means individually controlling the respective ducts and manually adjustable to predetermined settings, said conduit communicating with the several ducts externally of said valve means, whereby to afford controlled communication between said pipe and said aperture at a plurality of points about the periphery thereof.

3. An intake manifold fitting comprising a block having a central aperture, a plurality of ducts opening tosaid aperture, passage means affording communication between the several ducts and provided with a supply connection, and valve seats about each of said ducts between said passage means and said central aperture; in combination with a valve member for each duct threaded in said block and adjustable to and from one of said seats, whereby to control flow to said aperture at each of the points at which the several ducts open thereto.

4. An intake manifold fitting comprising the combination with a block having faces adapted to be clamped between manifold flanges and a central aperture registerable with manifold openings, and a channel in one of said faces adapted to be closed by one of said flanges when the fitting is assembled in the manifold, and a plurality of ducts opening from said channel to said aperture at various points about the periphery thereof, said block being provided with a valve seat for each such duct between said channel and said aperture; of a supply pipe leading through said block to the channel; and valve means individually adjustable in said block to and from the respective seats, whereby to control relative delivery from said pipe to said aperture individually through each of the several ducts.

5. An intake manifold fitting comprising a block having a central aperture constituting a manifold section and a plurality of ducts opening through said block tangentially to said aperture at points spaced about the periphery thereof; in combination with supply means communicating with the several ducts, said block being provided at each duct with a valve seat between said supply means and said aperture; and needle valves associated with each of the several ducts and individually adjustable to and from the respective seats to control relative delivery individually through the several ducts at the points of said aperture to which said ducts open.

CHARLES S'I'RANCKE. 

